2 files changed, 39 insertions, 4 deletions
diff --git a/src/mesa/state_tracker/st_atom_depth.c b/src/mesa/state_tracker/st_atom_depth.c
index 4ea62dda18..0aa128f947 100644
--- a/src/mesa/state_tracker/st_atom_depth.c
+++ b/src/mesa/state_tracker/st_atom_depth.c
@@ -98,9 +98,11 @@ update_depth_stencil_alpha(struct st_context *st)
 
    memset(dsa, 0, sizeof(*dsa));
 
-   dsa->depth.enabled = ctx->Depth.Test;
-   dsa->depth.writemask = ctx->Depth.Mask;
-   dsa->depth.func = st_compare_func_to_pipe(ctx->Depth.Func);
+   if (ctx->Depth.Test && ctx->DrawBuffer->Visual.depthBits > 0) {
+      dsa->depth.enabled = 1;
+      dsa->depth.writemask = ctx->Depth.Mask;
+      dsa->depth.func = st_compare_func_to_pipe(ctx->Depth.Func);
+   }
 
    if (ctx->Query.CurrentOcclusionObject &&
        ctx->Query.CurrentOcclusionObject->Active)
diff --git a/src/mesa/state_tracker/st_cb_bufferobjects.c b/src/mesa/state_tracker/st_cb_bufferobjects.c
index 562ac6c65c..28e387c399 100644
--- a/src/mesa/state_tracker/st_cb_bufferobjects.c
+++ b/src/mesa/state_tracker/st_cb_bufferobjects.c
@@ -206,8 +206,40 @@ st_bufferobj_map(GLcontext *ctx, GLenum target, GLenum access,
 }
 
 
+
 /**
- * Called via glMapBufferARB().
+ * Called via glMapBufferRange().
+ */
+static void *
+st_bufferobj_map_range(GLcontext *ctx, GLenum target, 
+                       GLintptr offset, GLsizeiptr length, GLbitfield access,
+                       struct gl_buffer_object *obj)
+{
+   struct pipe_context *pipe = st_context(ctx)->pipe;
+   struct st_buffer_object *st_obj = st_buffer_object(obj);
+   GLuint flags = 0;
+
+   if (access & GL_MAP_WRITE_BIT)
+      flags |= PIPE_BUFFER_USAGE_CPU_WRITE;
+
+   if (access & GL_MAP_READ_BIT)
+      flags |= PIPE_BUFFER_USAGE_CPU_READ;
+
+   /* ... other flags ...
+    */
+
+   if (access & MESA_MAP_NOWAIT_BIT)
+      flags |= PIPE_BUFFER_USAGE_DONTBLOCK;
+
+   obj->Pointer = pipe_buffer_map(pipe->screen, st_obj->buffer, flags);
+   return obj->Pointer;
+}
+
+
+
+
+/**
+ * Called via glUnmapBufferARB().
  */
 static GLboolean
 st_bufferobj_unmap(GLcontext *ctx, GLenum target, struct gl_buffer_object *obj)
@@ -230,5 +262,6 @@ st_init_bufferobject_functions(struct dd_function_table *functions)
    functions->BufferSubData = st_bufferobj_subdata;
    functions->GetBufferSubData = st_bufferobj_get_subdata;
    functions->MapBuffer = st_bufferobj_map;
+   functions->MapBufferRange = st_bufferobj_map_range;
    functions->UnmapBuffer = st_bufferobj_unmap;
 }